TW202030701A - A respiratory monitoring device and a clinic bed for monitoring respiratory state of a patient - Google Patents

Abstract

The present invention provides a respiratory monitoring device and a clinic bed for monitoring respiratory state of a patient. The device includes a first Doppler sensor, an amplification circuit, a filtering circuit, and a controller. The first Doppler sensor located on a first side guardrail of the clinic bed for sensing a respiratory state of the patient and outputting a first sensing signal. The amplification circuit coupled to the first Doppler sensor for amplifying the first sensing signal; and the filtering circuit filters the amplified first sensing signal, and outputs first signal. The controller receives the first signal and determines whether the patient has breathing according to the first signal, and output a patient abnormal signal to notify a caregiver when it is determined that the patient is not breathing. So that the non-contact detection of the human physiological signals can be realized, and the restriction and discomfort feeling of traditional contact type detection equipment to the patient can be avoided.

Description

Respiratory monitoring device and hospital bed for monitoring the respiratory state of patients

The invention relates to the field of medical detection, in particular to a breathing monitoring device and a hospital bed for monitoring the breathing state of a patient.

Physiological parameters (such as respiratory signals) are an important indicator in modern medical testing. The monitoring of physiological parameters can provide doctors with a reliable basis for diagnosis and treatment. In today's hospitals, almost all contact monitoring devices are used to monitor the physiological parameters of testers. The contact monitoring device generally has the characteristics of being relatively large and not easy to move, and the contact monitoring device also needs to be in contact with the tester for a long time, which is likely to cause discomfort to the tester. The physiological parameters of the tester are indispensable information for determining the disease state of the tester, so it is necessary to provide a more comfortable and effective monitoring device.

In view of the above, it is necessary to provide a breathing monitoring device and a hospital bed for monitoring the breathing state of the patient, which can avoid the restraint and discomfort caused by the traditional contact detection equipment to the patient.

A breathing monitoring device, which is set on a hospital bed, includes: The first Doppler sensor is arranged on the first side guardrail of the hospital bed, and is used to sense the breathing state of the patient and output the first sensing signal; An amplifier circuit, coupled to the first Doppler sensor, for amplifying the first sensing signal; A filter circuit for receiving and filtering the amplified first sensing signal, and outputting the first signal; and The controller is configured to receive the first signal and determine whether the patient is breathing according to the first signal, and output a patient abnormal signal to notify the nursing staff when it is determined that the patient is not breathing.

Preferably, the device further includes: A second Doppler sensor, arranged on the second side guardrail of the hospital bed, for sensing the breathing state of the patient and outputting a second sensing signal; The amplifying circuit is also coupled to the second Doppler sensor for amplifying the second sensing signal; The filter circuit is also used for receiving and filtering the amplified second sensing signal, and outputting a second signal; and The controller is further configured to receive the second signal, and determine whether the patient is breathing according to the first signal and the second signal, and output a patient abnormal signal to notify when it is determined that the patient is not breathing Nursing staff.

Preferably, the first Doppler sensor is used to sense the ups and downs of the patient's chest or abdomen to obtain the first sensing signal.

Preferably, the controller judging whether the patient is breathing according to the first signal includes: Calculating the amplitude value of the first signal in the time domain; Determining whether the amplitude value of the first signal in the time domain falls within a first preset range within a preset time; When the amplitude value falls within a first preset range within a preset time, it is determined that the patient is breathing normally; When the amplitude value does not fall within the first preset range within a preset time, it is determined that the patient's breathing is abnormal.

Preferably, the controller judging whether the patient is breathing according to the first signal includes: Performing frequency domain transform on the first signal by Fourier transform to obtain a frequency domain signal of the first signal; Determining whether the frequency domain signal of the first signal falls within a second preset range within a preset time; When the frequency domain signal falls within a second preset range within a preset time, it is determined that the patient is breathing normally; and When the frequency domain signal does not fall within the second preset range within the preset time, it is determined that the patient is not breathing normally.

Preferably, the second preset range is 0.1 Hz-0.5 Hz.

A hospital bed used to monitor the breathing state of a patient, including: The first Doppler sensor is arranged on the first side guardrail of the hospital bed, and is used to sense the breathing state of the patient and output the first sensing signal; A pressure sensing pad, for sensing the pressure sensing signal when the patient lies on the pressure sensing pad; The controller is coupled to the first Doppler sensor and the pressure sensing pad, and determines whether the patient is breathing according to the first sensing signal and the pressure sensing signal, and when it is determined that the When the patient is not breathing, a patient abnormality signal is output to notify the nursing staff.

Preferably, the hospital bed further includes: A second Doppler sensor, arranged on the second side guardrail of the hospital bed, for sensing the breathing state of the patient and outputting a second sensing signal; The controller is further configured to receive the second sensing signal, and determine whether the patient is breathing according to the first sensing signal, the second sensing signal, and the pressure sensing signal. When it is determined that the patient is not breathing, a patient abnormality signal is output to notify the nursing staff.

Preferably, the first Doppler sensor is used to sense the ups and downs of the patient's chest or abdomen to obtain the first sensing signal.

Preferably, the controller judging whether the patient is breathing according to the first sensing signal and the pressure sensing signal includes: Calculating the amplitude value of the first sensing signal in the time domain; Determining whether the amplitude value falls within a first preset range within a preset time, and whether the pressure sensing signal changes within the preset time; When the amplitude value falls within a first preset range within a preset time, and the pressure sensing signal changes within the preset time, confirming that the patient is breathing normally; When the amplitude value does not fall within the first preset range within the preset time, or the pressure sensing signal does not change within the preset time, it is confirmed that the patient's breathing is abnormal.

Preferably, the controller judging whether the patient is breathing according to the first sensing signal and the pressure sensing signal includes: Performing frequency domain transformation on the first sensing signal by Fourier transform to obtain a frequency domain signal of the first sensing signal; Determining whether the frequency domain signal of the first sensing signal falls within a second preset range within a preset time, and whether the pressure sensing signal changes within the preset time; When the frequency domain signal falls within a second preset range within a preset time, and the pressure sensing signal changes within the preset time, determining that the patient is breathing normally; and When the frequency domain signal does not fall within the second preset range within the preset time, or the pressure sensing signal does not change within the preset time, it is determined that the patient is not breathing normally.

Preferably, the second preset range is 0.1 Hz-0.5 Hz.

Compared with the prior art, the breathing monitoring device and the bed for monitoring the breathing state of the patient provided by the present invention detect the breathing state of the patient by setting a Doppler sensor in the bed where the patient is located, thereby real-time monitoring of the patient's breathing state Physical conditions. It can greatly reduce the burden of nurses who need to measure the patient's breathing state at any time, and avoid the restraint and discomfort brought by traditional contact detection equipment to patients.

In order to be able to understand the above objectives, features and advantages of the present invention more clearly, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that the embodiments of the application and the features in the embodiments can be combined with each other if there is no conflict.

In the following description, many specific details are explained in order to fully understand the present invention. The described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field of the present invention. The terms used in the description of the present invention herein are only for the purpose of describing specific embodiments, and are not intended to limit the present invention.

Please refer to FIG. 1, which shows an application environment diagram of the respiratory monitoring device in the first embodiment of the present invention. The breathing monitoring device 1 includes, but is not limited to, a first Doppler sensor 11, an amplifier circuit 12, a filter circuit 13 and a controller 14. The first Doppler sensor 11 is electrically connected to the filter circuit 13 through the amplifying circuit 12. The filter circuit 13 is electrically connected to the controller 14.

The first Doppler sensor 11 can eliminate the influence of a specific medium (such as cloth, silk, etc.) within a specific distance range, detect the micro-movement changes of the patient's chest cavity, and obtain the physiological parameters of the patient. The first Doppler sensor 11 is used to detect the physiological parameters of the patient, and determine whether the current condition of the patient is good according to the physiological parameters. The physiological parameter includes a parameter indicating the breathing state of the patient, for example, respiratory frequency, and the physiological parameter also includes a parameter indicating the heartbeat state of the patient, for example, the heartbeat frequency. Since the signal reflecting human breathing comes from the upper body of the human body, in order to obtain a clearer breathing signal of the patient, the first Doppler sensor 11 can be arranged on the hospital bed 2 close to the upper body of the human body, so as to sense Measure the ups and downs of the patient's chest or abdomen to obtain sensing signals. For example, in this embodiment, the first Doppler sensor 11 is provided on the first side guardrail 201 of the hospital bed 2 (as shown in FIG. 2), and is used to sense the patient's breathing state and output the first A sensing signal.

The amplifying circuit 12 may be a differential amplifier coupled to the first Doppler sensor for amplifying the signal detected by the first Doppler sensor 11 and eliminating common mode noise. In this embodiment, the amplifying circuit 12 is used to amplify the first sensing signal.

The filter circuit 13 may be a band-pass filter for filtering out noise. In this embodiment, the filter circuit 13 receives and filters the amplified first sensing signal, and outputs the first signal to the controller 14.

The controller 14 may be composed of integrated circuits, for example, may be composed of a single packaged integrated circuit, or may be composed of multiple packaged integrated circuits of the same function or different functions, including one or more central processing units. Combinations of central processing unit (CPU), microprocessor, digital word processing chip, graphics processor, and various control chips. The controller 14 is the control core (Control Unit) of the respiratory monitoring device 1, which uses various interfaces and lines to connect various components of the entire respiratory monitoring device 1. For example, the first Doppler sensor 11, the amplifying circuit 12, and the filter circuit 13.

In this embodiment, the first Doppler sensor 11 sends a continuous wave radar signal, and the continuous wave radar signal generates a reflected radar signal after passing through the patient's body. It can be understood that the reflected radar signal is the first sensing signal for sensing the breathing state of the patient. After receiving the first sensing signal, the first Doppler sensor 11 sends the first sensing signal to the amplifying circuit 12 for amplification, and the amplifying circuit 12 amplifies the The first sensing signal of is sent to the filter circuit 13, and the filter circuit 13 filters out the signal outside the human respiration range in the first sensing signal and outputs a first signal, and then sends the first signal To the controller 14.

The controller 14 receives the first signal, and determines whether the patient is breathing according to the first signal.

In one embodiment, the controller 14 calculates the amplitude value of the first signal in the time domain. The amplitude value of the first signal in the time domain may indicate the undulating displacement of the chest cavity or the abdomen during breathing of the patient, and the displacement may be used to indicate the breathing condition of the patient. The controller 14 is used to determine whether the amplitude value of the first signal in the time domain falls within a first preset range within a preset time to determine whether the patient is breathing. When the amplitude value falls within the first preset range within the preset time, it indicates that the patient is breathing normally; when the amplitude value does not fall within the first preset range within the preset time, It is characterized by abnormal breathing of the patient. For example, when the amplitude value is higher than the maximum value in the first preset range within a preset time, it is confirmed that the patient is short of breath, an emergency situation may occur, and emergency rescue is required; when the amplitude value is When the preset time is lower than the minimum value in the first preset range, it is confirmed that the patient has weak breathing and may not be breathing at any time, and emergency rescue is needed.

In one embodiment, the controller 14 performs frequency domain transformation on the first signal to obtain a frequency domain signal of the first signal. In this embodiment, the frequency domain transform of the first signal is performed by Fourier transform to obtain the frequency domain signal of the first signal. The frequency domain signal can characterize the patient's breathing rate. Under normal circumstances, the number of breaths of a normal person is 6-30 times, that is, the respiratory frequency is 0.1Hz-0.5Hz. The controller 14 is used to determine whether the frequency domain signal of the first signal falls within a second preset range within a preset time to determine whether the patient is breathing. When the frequency domain signal falls within the second preset range within the preset time, it indicates that the patient is breathing normally; when the frequency domain signal does not fall within the second preset range within the preset time, it indicates that The patient is breathing abnormally. For example, when the frequency domain signal is higher than the maximum value in the second preset range within a preset time, it is confirmed that the patient is short of breath, an emergency situation may occur, and emergency rescue is required; when the frequency domain signal When the signal is lower than the minimum value in the second preset range within the preset time, it is confirmed that the patient has weak breathing and may not be breathing at any time, and emergency rescue is required. Wherein, the second preset range may be 0.1 Hz-0.5 Hz.

In an embodiment, the controller 14 may also determine whether the amplitude value of the first signal in the time domain falls within a first preset range within a preset time, and the frequency domain of the first signal Whether the signal falls within the second preset range within the preset time is used to determine whether the patient is breathing. When the amplitude value does not fall within the first preset range within the preset time, or the frequency domain signal does not fall within the second preset range within the preset time, confirm that the patient is breathing Shortness of breath or weak breathing, an emergency may occur, and emergency rescue is needed; when the amplitude value falls within the first preset range within a preset time, and the frequency domain signal falls within the preset time In the second preset range, it is confirmed that the patient's breathing state is good, and emergency rescue is not required.

The controller 14 can also send prompt information to the nursing staff according to the breathing state of the patient. For example, when the controller 14 determines that the patient is not breathing according to the first signal, it may send a patient abnormality signal to notify the nursing staff.

In this embodiment, the breathing monitoring device 1 further includes a power supply 15, and the power supply 15 is used to provide power to the breathing monitoring device 1. The power source 15 may be a direct current power source, a non-rechargeable battery or a rechargeable battery (for example, a lithium battery).

In this embodiment, the respiratory monitoring device 1 may further include a communication unit 16 for providing wired or wireless network communication for the respiratory monitoring device 1. For example, the respiratory monitoring device 1 is connected to the computer device 3 via a wireless network via the communication unit 16. The breathing monitoring device 1 can send the first signal to the computer device 3, and the computer device 3 displays the breathing state of the patient.

Please refer to FIG. 3, which is a schematic structural diagram of a breathing monitoring device in the second embodiment of the present invention. The breathing monitoring device 1 includes, but is not limited to, a first Doppler sensor 11, an amplifier circuit 12, a filter circuit 13, a controller 14 and a second Doppler sensor 17. The first Doppler sensor 11 is arranged on the first side guardrail 201 of the hospital bed 2, and the second Doppler sensor 17 is arranged on the second side guardrail 202 of the hospital bed 2 (as shown in FIG. 4). The first Doppler sensor 11 and the second Doppler sensor 17 are electrically connected, and the first Doppler sensor 11 and the second Doppler sensor 17 is electrically connected to the filter circuit 13 through the amplifying circuit 12. The filter circuit 13 is electrically connected to the controller 14.

The first Doppler sensor 11 is used to sense the breathing state of the patient and output a first sensing signal, and the second Doppler sensor 17 is used to sense the breathing state of the patient and output the second Sensing signal.

The amplifying circuit 12 is used to amplify the first sensing signal and the second sensing signal; the filter circuit 13 is used to receive and filter the amplified first sensing signal and the second sensing signal, and The first signal and the second signal are respectively output to the controller 14.

The controller 14 performs frequency domain transformation on the first signal and the second signal to obtain a frequency domain signal of the first signal and a frequency domain signal of the second signal. The frequency domain signal can characterize the patient's breathing rate. The controller 14 is used to determine whether the frequency domain signal of the first signal and the frequency domain signal of the second signal fall within a second preset range within a preset time to determine whether the patient is breathing. When the frequency domain signal of the first signal and the frequency domain signal of the second signal fall within the second preset range within the preset time, it indicates that the patient is breathing normally; when the frequency domain of the first signal When the frequency domain signal of the second signal does not fall within the second preset range within the preset time, it indicates that the patient's breathing is abnormal and the patient may not be breathing. The second preset range may be 0.1 Hz-0.5 Hz.

In this embodiment, the breathing monitoring device 1 also includes a power supply 15 and a communication unit 16, which will not be repeated here.

Those skilled in the art can understand that the schematic diagrams 1 and 3 are only examples of the respiratory monitoring device 1 and do not constitute a limitation on the respiratory monitoring device 1. They may include more or less components than those shown in the figure, or combine some components. Components, or different components, for example, the respiratory monitoring device 1 may also include an I/O interface.

Please refer to FIG. 5, which is a structural diagram of a hospital bed for monitoring the breathing state of a patient in an embodiment of the present invention.

In this embodiment, the hospital bed 2 includes a first Doppler sensor 11, a second Doppler sensor 17, a pressure sensing pad 20 and a controller 21. The first Doppler sensor 11 is arranged on the first side guardrail 201 of the hospital bed, and is used to sense the breathing state of the patient and output a first sensing signal. The second Doppler sensor 17 is arranged on the second side guardrail 202 of the hospital bed (as shown in FIG. 6), and is used to sense the breathing state of the patient and output a second sensing signal. The pressure sensing pad 20 is provided with a pressure sensor 200, and the pressure sensor 200 can sense the pressure of the patient lying on the pressure sensing pad 20 and output a pressure sensing signal. Since the breathing activity of the patient while lying on the pressure sensing pad 20 will cause the chest to fluctuate by about ten to twenty millimeters, it can be sensed by the pressure sensor 200 and output a pressure sensing signal to the controller 21.

The controller 21 can determine whether the patient is breathing according to whether the pressure sensing signal changes within a preset time. For example, when the pressure sensing signal detected by the pressure sensor 200 does not change within a preset time, it can be confirmed that the patient may have stopped breathing within the preset time; when the pressure sensor 200 When the pressure sensing signal detected by 200 changes within the preset time, it can be confirmed that the patient is still breathing within the preset time, and the patient is currently in good condition.

The controller 21 is electrically connected to the first Doppler sensor 11, the second Doppler sensor 17 and the pressure sensing pad 20, and the controller 21 is used to receive the first sensor. Detecting a signal, a second sensing signal, and the pressure sensing signal, and determining whether the patient is breathing according to the first sensing signal, the second sensing signal, and the pressure sensing signal.

In one embodiment, the controller 21 performs frequency domain transformation on the first sensing signal to obtain the frequency domain signal of the first sensing signal. The controller 21 is used to determine whether the frequency domain signal of the first sensing signal falls within a second preset range within a preset time, and whether the pressure sensing signal changes within the preset time To determine whether the patient is breathing. When the frequency domain signal falls within the second preset range within the preset time, and the pressure sensing signal changes within the preset time, it indicates that the patient is breathing normally; when the frequency domain signal When the pressure sensing signal does not fall within the second preset range within the preset time, or the pressure sensing signal does not change within the preset time, it indicates that the patient is not breathing normally, and the patient may not be breathing. Wherein, the second preset range may be 0.1 Hz-0.5 Hz.

In one embodiment, the controller 21 performs frequency domain transformation on the first sensing signal and the second sensing signal to obtain the frequency domain signal of the first sensing signal and the second sensing signal respectively. The frequency domain signal of the measured signal. The controller 21 is used to determine whether the frequency domain signal of the first sensing signal and the frequency domain signal of the second sensing signal fall within a second preset range within a preset time, and the pressure sensing Whether the test signal changes within the preset time is used to determine whether the patient is breathing. When the frequency domain signal of the first sensing signal and the frequency domain signal of the second sensing signal fall within the second preset range within the preset time, and the pressure sensing signal is within the preset time When there is a change, it indicates that the patient is breathing normally; when the frequency domain signal of the first sensing signal and the frequency domain signal of the second sensing signal do not fall within the second preset range within the preset time, Or when the pressure sensing signal does not change within the preset time, it indicates that the patient is not breathing normally, and the patient may not be breathing.

It can be understood that, in this embodiment, the hospital bed 2 may also include an amplifier circuit, a filter circuit, and a power supply. The functions of the amplifying circuit, filter circuit and power supply are the same as those of the amplifying circuit, filter circuit and power supply in the respiratory monitoring device, and will not be repeated here.

As shown in Fig. 7, the present invention uses the respiratory monitoring device in the first embodiment to perform respiratory monitoring method flow chart. According to different needs, the order of the steps in the flowchart can be changed, and some steps can be omitted or combined.

Step S01, the controller 14 receives the first signal.

In this embodiment, after receiving the first sensing signal, the first Doppler sensor 11 sends the first sensing signal to the amplifying circuit 12 for amplification. The circuit 12 then sends the amplified first sensing signal to the filter circuit 13, and the filter circuit 13 filters out signals outside the human respiration range in the first sensing signal and outputs a first signal, and then Send the first signal to the controller 14.

In step S03, the controller 14 calculates the amplitude value of the first signal in the time domain.

In this embodiment, the amplitude value of the first signal in the time domain may indicate the undulating displacement of the chest cavity or the abdomen during the breathing process of the patient, and the displacement may be used to indicate the breathing condition of the patient.

Step S05: The controller 14 performs frequency domain transformation on the first signal to obtain a frequency domain signal of the first signal.

In this embodiment, the frequency domain transform of the first signal is performed by Fourier transform to obtain the frequency domain signal of the first signal.

Step S07: The controller 14 determines whether the amplitude value of the first signal in the time domain falls within a first preset range within a preset time, and the frequency domain signal of the first signal is within the preset time Whether it falls within the second preset range to determine whether the patient is breathing.

In this embodiment, when the amplitude value does not fall within the first preset range within the preset time, or the frequency domain signal does not fall within the second preset range within the preset time , It is confirmed that the patient has shortness of breath or weak breathing, an emergency situation may occur, and emergency rescue is needed, and the process goes to step S09; when the amplitude value falls within the first preset range within a preset time, and the When the frequency domain signal falls within the second preset range within the preset time, it is confirmed that the patient's breathing state is good, no emergency rescue is needed, and the process ends.

In step S09, the controller 14 sends a patient abnormality signal to notify the nursing staff that the patient needs first aid.

As shown in FIG. 8, the present invention uses the respiratory monitoring device in the second embodiment to perform respiratory monitoring method flow chart. According to different needs, the order of the steps in the flowchart can be changed, and some steps can be omitted or combined.

Step S02, the controller 14 receives the first signal and the second signal.

In this embodiment, the first Doppler sensor 11 is used to sense the patient's breathing state and output a first sensing signal, and the second Doppler sensor 17 is used to sense the patient's Breathing state and output a second sensing signal. The amplifying circuit 12 is used to amplify the first sensing signal and the second sensing signal; the filter circuit 13 is used to receive and filter the amplified first sensing signal and the second sensing signal, and The first signal and the second signal are respectively output to the controller 14.

Step S04: The controller 14 performs frequency domain transformation on the first signal and the second signal to obtain a frequency domain signal of the first signal and a frequency domain signal of the second signal, respectively. In this embodiment, the first signal and the second signal are subjected to frequency domain transformation through Fourier transform to obtain the frequency domain signal of the first signal and the frequency domain signal of the second signal, respectively.

In step S06, the controller 14 determines whether the frequency domain signal of the first signal and the frequency domain signal of the second signal fall within a second preset range within a preset time to determine whether the patient is breathing. When the frequency domain signal of the first signal and the frequency domain signal of the second signal fall within the second preset range within the preset time, it indicates that the patient is breathing normally; when the frequency domain of the first signal When the signal or the frequency domain signal of the second signal does not fall within the second preset range within the preset time, it indicates that the patient is not breathing normally, and the patient may not be breathing, and the flow proceeds to step S08.

In step S08, the controller 14 sends a patient abnormality signal to notify the nursing staff that the patient needs first aid.

For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description, and therefore it is intended to fall within the claims. All changes within the meaning and scope of equivalent elements of are included in the present invention. Any reference signs in the claims should not be regarded as limiting the claims involved. In addition, it is obvious that the word "including" does not exclude other elements or, and the singular does not exclude the plural. Multiple units or devices stated in the system claims can also be realized by one unit or device through software or hardware. Words such as first and second are used to denote names, but do not denote any specific order.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to the above preferred embodiments, those of ordinary skill in the art should understand that the technology of the present invention can be Modification or equivalent replacement of the solution should not depart from the spirit and scope of the technical solution of the present invention.

1: Respiratory monitoring device 2: hospital bed 3: computer device 11: The first Doppler sensor 17: The second Doppler sensor 12: Amplifying circuit 13: filter circuit 14, 21: Controller 15: Power 16: Communication unit 201: The first side guardrail 202: second side guardrail 20: Pressure sensing pad 200: pressure sensor

In order to explain the embodiments of the present invention or the technical solutions in the prior art more clearly, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the drawings in the following description are merely present For the embodiments of the invention, for those of ordinary skill in the art, other drawings may be obtained based on the provided drawings without creative work.

Fig. 1 is a diagram of the application environment of the respiratory monitoring device in the first embodiment of the present invention. 2 is a schematic diagram of the installation position of the first Doppler sensor in the respiratory monitoring device in the first embodiment of the present invention. Fig. 3 is a schematic structural diagram of a breathing monitoring device in a second embodiment of the present invention. 4 is a schematic diagram of the installation positions of the first Doppler sensor and the second Doppler sensor in the respiratory monitoring device in the second embodiment of the present invention. Fig. 5 is a schematic structural diagram of a hospital bed for monitoring the breathing state of a patient in an embodiment of the present invention. Fig. 6 is a schematic diagram of a hospital bed for monitoring the breathing state of a patient in an embodiment of the present invention. Fig. 7 is a flowchart of a method for performing respiratory monitoring by using the respiratory monitoring device in the first embodiment of the present invention. Fig. 8 is a flowchart of a method for performing respiratory monitoring by using the respiratory monitoring device in the second embodiment of the present invention.

1: Respiratory monitoring device

3: computer device

11: The first Doppler sensor

12: Amplifying circuit

13: filter circuit

14: Controller

15: Power

16: Communication unit

Claims (12)

A breathing monitoring device is arranged on a hospital bed, and the device includes: The first Doppler sensor is arranged on the first side guardrail of the hospital bed, and is used to sense the breathing state of the patient and output the first sensing signal; An amplifier circuit, coupled to the first Doppler sensor, for amplifying the first sensing signal; A filter circuit for receiving and filtering the amplified first sensing signal, and outputting the first signal; and The controller is configured to receive the first signal and determine whether the patient is breathing according to the first signal, and output a patient abnormal signal to notify the nursing staff when it is determined that the patient is not breathing. As the respiratory monitoring device described in item 1 of the scope of patent application, the device further includes: A second Doppler sensor, arranged on the second side guardrail of the hospital bed, for sensing the breathing state of the patient and outputting a second sensing signal; The amplifying circuit is also coupled to the second Doppler sensor for amplifying the second sensing signal; The filter circuit is also used for receiving and filtering the amplified second sensing signal, and outputting a second signal; and The controller is further configured to receive the second signal, and determine whether the patient is breathing according to the first signal and the second signal, and output a patient abnormal signal to notify when it is determined that the patient is not breathing Nursing staff. According to the respiratory monitoring device described in the first item of the scope of patent application, the first Doppler sensor is used to sense the ups and downs of the patient's chest or abdomen to obtain the first sensing signal. For the breathing monitoring device described in item 1 of the scope of patent application, the controller judging whether the patient is breathing according to the first signal includes: Calculating the amplitude value of the first signal in the time domain; Determining whether the amplitude value of the first signal in the time domain falls within a first preset range within a preset time; When the amplitude value falls within a first preset range within a preset time, it is determined that the patient is breathing normally; When the amplitude value does not fall within the first preset range within a preset time, it is determined that the patient's breathing is abnormal. For the breathing monitoring device described in item 1 of the scope of patent application, the controller judging whether the patient is breathing according to the first signal includes: Performing frequency domain transform on the first signal by Fourier transform to obtain a frequency domain signal of the first signal; Determining whether the frequency domain signal of the first signal falls within a second preset range within a preset time; When the frequency domain signal falls within a second preset range within a preset time, it is determined that the patient is breathing normally; and When the frequency domain signal does not fall within the second preset range within the preset time, it is determined that the patient is not breathing normally. As for the respiratory monitoring device described in item 1 of the scope of patent application, the second preset range is 0.1 Hz-0.5 Hz. A hospital bed for monitoring the respiratory state of a patient, the hospital bed comprising: The first Doppler sensor is arranged on the first side guardrail of the hospital bed, and is used to sense the breathing state of the patient and output the first sensing signal; A pressure sensing pad, for sensing the pressure sensing signal when the patient lies on the pressure sensing pad; The controller is coupled to the first Doppler sensor and the pressure sensing pad, and determines whether the patient is breathing according to the first sensing signal and the pressure sensing signal, and when it is determined that the When the patient is not breathing, a patient abnormality signal is output to notify the nursing staff. As the hospital bed described in item 7 of the scope of patent application, the hospital bed also includes: A second Doppler sensor, arranged on the second side guardrail of the hospital bed, for sensing the breathing state of the patient and outputting a second sensing signal; The controller is further configured to receive the second sensing signal, and determine whether the patient is breathing according to the first sensing signal, the second sensing signal, and the pressure sensing signal. When it is determined that the patient is not breathing, a patient abnormality signal is output to notify the nursing staff. For the hospital bed described in item 7 of the scope of patent application, the first Doppler sensor is used to sense the ups and downs of the patient's chest or abdomen to obtain the first sensing signal. For the hospital bed described in item 7 of the scope of patent application, the controller determining whether the patient is breathing according to the first sensing signal and the pressure sensing signal includes: Calculating the amplitude value of the first sensing signal in the time domain; Determining whether the amplitude value falls within a first preset range within a preset time, and whether the pressure sensing signal changes within the preset time; When the amplitude value falls within a first preset range within a preset time, and the pressure sensing signal changes within the preset time, confirming that the patient is breathing normally; When the amplitude value does not fall within the first preset range within the preset time, or the pressure sensing signal does not change within the preset time, it is confirmed that the patient's breathing is abnormal. For the hospital bed described in item 7 of the scope of patent application, the controller determining whether the patient is breathing according to the first sensing signal and the pressure sensing signal includes: Performing frequency domain transformation on the first sensing signal by Fourier transform to obtain a frequency domain signal of the first sensing signal; Determining whether the frequency domain signal of the first sensing signal falls within a second preset range within a preset time, and whether the pressure sensing signal changes within the preset time; When the frequency domain signal falls within a second preset range within a preset time, and the pressure sensing signal changes within the preset time, determining that the patient is breathing normally; and When the frequency domain signal does not fall within the second preset range within the preset time, or the pressure sensing signal does not change within the preset time, it is determined that the patient is not breathing normally. For the hospital bed described in item 11 of the scope of patent application, the second preset range is 0.1 Hz-0.5 Hz.

Images